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Finding the Fourth Proportional to 109,092.80, 163,606.80 and 42,494.60

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Solution

The fourth proportional to 109,092.80, 163,606.80 and 42,494.60 is: 63,729.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,092.80 : 163,606.80 = 42,494.60 : x
  2. Step 2: Convert to fraction form
    109,092.80/163,606.80 = 42,494.60/x
  3. Step 3: Cross multiply
    109,092.80x = 163,606.80 × 42,494.60
  4. Step 4: Simplify right side
    109,092.80x = 6,952,405,523.28
  5. Step 5: Solve for x
    x = 6,952,405,523.28/109,092.80
  6. Step 6: Final answer
    x = 63,729.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.